kwk created this revision.
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The foundation for this patch was done in:
https://reviews.llvm.org/D121370. I wanted to "rescue" some pieces from
it.
Unlike D121370 <https://reviews.llvm.org/D121370>, this patch doesn't modify
the regular expression itself.
It simply provides three functions to have a cleaner and more
transparent way how the include name is processed from an `#include`
line.
Here's how I've tested this patch:
$ cd llvm-project
$ mkdir build && cd build
$ cmake ../llvm/ -DCMAKE_BUILD_TYPE=Release -DCLANG_BUILD_TOOLS=On
-DLLVM_ENABLE_PROJECTS=clang -DCLANG_INCLUDE_TESTS=ON -DLLVM_BUILD_UTILS=ON -G
Ninja
$ ninja clangFormat
$ ninja FormatTests
$ ./tools/clang/unittests/Format/FormatTests --gtest_filter=SortIncludesTest*
And if that worked I doubled checked that nothing else broke by running
all format checks:
$ ./tools/clang/unittests/Format/FormatTests
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D134733
Files:
clang/include/clang/Tooling/Inclusions/HeaderIncludes.h
clang/lib/Format/Format.cpp
clang/lib/Tooling/Inclusions/HeaderIncludes.cpp
Index: clang/lib/Tooling/Inclusions/HeaderIncludes.cpp
===================================================================
--- clang/lib/Tooling/Inclusions/HeaderIncludes.cpp
+++ clang/lib/Tooling/Inclusions/HeaderIncludes.cpp
@@ -169,13 +169,6 @@
});
}
-inline StringRef trimInclude(StringRef IncludeName) {
- return IncludeName.trim("\"<>");
-}
-
-const char IncludeRegexPattern[] =
- R"(^[\t\ ]*#[\t\ ]*(import|include)[^"<]*(["<][^">]*[">]))";
-
// The filename of Path excluding extension.
// Used to match implementation with headers, this differs from sys::path::stem:
// - in names with multiple dots (foo.cu.cc) it terminates at the *first*
@@ -274,8 +267,7 @@
MaxInsertOffset(MinInsertOffset +
getMaxHeaderInsertionOffset(
FileName, Code.drop_front(MinInsertOffset), Style)),
- Categories(Style, FileName),
- IncludeRegex(llvm::Regex(IncludeRegexPattern)) {
+ Categories(Style, FileName), IncludeRegex(getCppIncludeRegex()) {
// Add 0 for main header and INT_MAX for headers that are not in any
// category.
Priorities = {0, INT_MAX};
@@ -290,10 +282,11 @@
for (auto Line : Lines) {
NextLineOffset = std::min(Code.size(), Offset + Line.size() + 1);
if (IncludeRegex.match(Line, &Matches)) {
+ StringRef IncludeName = tooling::getIncludeNameFromMatches(Matches);
// If this is the last line without trailing newline, we need to make
// sure we don't delete across the file boundary.
addExistingInclude(
- Include(Matches[2],
+ Include(IncludeName,
tooling::Range(
Offset, std::min(Line.size() + 1, Code.size() - Offset))),
NextLineOffset);
@@ -403,5 +396,24 @@
return Result;
}
+llvm::Regex getCppIncludeRegex() {
+ static const char CppIncludeRegexPattern[] =
+ R"(^[\t\ ]*#[\t\ ]*(import|include)[^"<]*(["<][^">]*[">]))";
+ return llvm::Regex(CppIncludeRegexPattern);
+}
+
+llvm::StringRef getIncludeNameFromMatches(
+ const llvm::SmallVectorImpl<llvm::StringRef> &Matches) {
+ if (Matches.size() >= 3) {
+ return Matches[2];
+ }
+ llvm_unreachable("Matches is too small");
+ return llvm::StringRef();
+}
+
+llvm::StringRef trimInclude(llvm::StringRef IncludeName) {
+ return IncludeName.trim("\"<>;");
+}
+
} // namespace tooling
} // namespace clang
Index: clang/lib/Format/Format.cpp
===================================================================
--- clang/lib/Format/Format.cpp
+++ clang/lib/Format/Format.cpp
@@ -44,6 +44,7 @@
#include "llvm/Support/VirtualFileSystem.h"
#include "llvm/Support/YAMLTraits.h"
#include <algorithm>
+#include <limits>
#include <memory>
#include <mutex>
#include <string>
@@ -2769,13 +2770,6 @@
}
}
-namespace {
-
-const char CppIncludeRegexPattern[] =
- R"(^[\t\ ]*#[\t\ ]*(import|include)[^"<]*(["<][^">]*[">]))";
-
-} // anonymous namespace
-
tooling::Replacements sortCppIncludes(const FormatStyle &Style, StringRef Code,
ArrayRef<tooling::Range> Ranges,
StringRef FileName,
@@ -2785,7 +2779,7 @@
.StartsWith("\xEF\xBB\xBF", 3) // UTF-8 BOM
.Default(0);
unsigned SearchFrom = 0;
- llvm::Regex IncludeRegex(CppIncludeRegexPattern);
+ llvm::Regex IncludeRegex(tooling::getCppIncludeRegex());
SmallVector<StringRef, 4> Matches;
SmallVector<IncludeDirective, 16> IncludesInBlock;
@@ -2843,7 +2837,8 @@
bool MergeWithNextLine = Trimmed.endswith("\\");
if (!FormattingOff && !MergeWithNextLine) {
if (IncludeRegex.match(Line, &Matches)) {
- StringRef IncludeName = Matches[2];
+ StringRef IncludeName = tooling::getIncludeNameFromMatches(Matches);
+
if (Line.contains("/*") && !Line.contains("*/")) {
// #include with a start of a block comment, but without the end.
// Need to keep all the lines until the end of the comment together.
@@ -3120,8 +3115,7 @@
inline bool isHeaderInsertion(const tooling::Replacement &Replace) {
return Replace.getOffset() == UINT_MAX && Replace.getLength() == 0 &&
- llvm::Regex(CppIncludeRegexPattern)
- .match(Replace.getReplacementText());
+ tooling::getCppIncludeRegex().match(Replace.getReplacementText());
}
inline bool isHeaderDeletion(const tooling::Replacement &Replace) {
@@ -3129,7 +3123,7 @@
}
// FIXME: insert empty lines between newly created blocks.
-tooling::Replacements
+static tooling::Replacements
fixCppIncludeInsertions(StringRef Code, const tooling::Replacements &Replaces,
const FormatStyle &Style) {
if (!Style.isCpp())
@@ -3161,7 +3155,7 @@
for (const auto &Header : HeadersToDelete) {
tooling::Replacements Replaces =
- Includes.remove(Header.trim("\"<>"), Header.startswith("<"));
+ Includes.remove(tooling::trimInclude(Header), Header.startswith("<"));
for (const auto &R : Replaces) {
auto Err = Result.add(R);
if (Err) {
@@ -3173,7 +3167,7 @@
}
}
- llvm::Regex IncludeRegex = llvm::Regex(CppIncludeRegexPattern);
+ llvm::Regex IncludeRegex = tooling::getCppIncludeRegex();
llvm::SmallVector<StringRef, 4> Matches;
for (const auto &R : HeaderInsertions) {
auto IncludeDirective = R.getReplacementText();
@@ -3181,9 +3175,9 @@
assert(Matched && "Header insertion replacement must have replacement text "
"'#include ...'");
(void)Matched;
- auto IncludeName = Matches[2];
- auto Replace =
- Includes.insert(IncludeName.trim("\"<>"), IncludeName.startswith("<"));
+ StringRef IncludeName = tooling::getIncludeNameFromMatches(Matches);
+ auto Replace = Includes.insert(tooling::trimInclude(IncludeName),
+ IncludeName.startswith("<"));
if (Replace) {
auto Err = Result.add(*Replace);
if (Err) {
Index: clang/include/clang/Tooling/Inclusions/HeaderIncludes.h
===================================================================
--- clang/include/clang/Tooling/Inclusions/HeaderIncludes.h
+++ clang/include/clang/Tooling/Inclusions/HeaderIncludes.h
@@ -129,6 +129,22 @@
llvm::Regex IncludeRegex;
};
+/// \returns a regex that can match various styles of C++ includes.
+/// For example:
+/// \code
+/// #include <foo.h>
+/// #include "bar.h"
+/// \endcode
+llvm::Regex getCppIncludeRegex();
+
+/// \returns the last match in the list of matches that is not empty.
+llvm::StringRef getIncludeNameFromMatches(
+ const llvm::SmallVectorImpl<llvm::StringRef> &Matches);
+
+/// \returns the given include name and removes the following symbols from the
+/// beginning and ending of the include name: " > < ;
+llvm::StringRef trimInclude(llvm::StringRef IncludeName);
+
} // namespace tooling
} // namespace clang
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